/Engine/Source/Runtime/GeometryCore/Public/Curve/CurveUtil.h
Smooth vertices in-place (will not produce a symmetric result, but does not require extra buffer)
namespace UE { namespace Geometry { namespace CurveUtil { template<typename RealType, typename VectorType> void UE::Geometry::CurveUtil::InPlaceSmooth ( [TArrayView](API\Runtime\Core\Containers\TArrayView)< VectorType > Vertices, int StartIdx, int EndIdx, double Alpha, int NumIterations, bool bClosed ) } } }